Major changes

[grk717]

Major fixes:

File	Fix
DataDomeCustomTaskRequest.py	Added model_validator to require proxy; proxy fields now written unconditionally in getTaskDict
DataDomeCustomTaskRequest.py	Moved datadomeVersion validation before the captchaUrl/htmlPageBase64 branching so it's reachable
DataDomeCustomTaskRequest.py	Removed unconditional task['domains'] = self.domains; now only set when not None
YidunRequest.py	Added 5 optional fields: yidunGetLib, yidunApiServerSubdomain, challenge, hcg (str), hct (int)
RecaptchaV2Request.py	Added optional isInvisible: bool field + serialization
RecaptchaV2EnterpiseRequest.py	Added optional userAgent and cookies fields + serialization
RecaptchaV3ProxylessRequest.py	Renamed min_score to minScore for consistency with RecaptchaV3EnterpriseRequest
TenDiCustomTaskRequest.py	Added optional metadata dict with validation (only captchaUrl key allowed, must be str)
CapMonsterCloudClient.py	Fixed timer logic for timeout
TspdCustomTaskRequest.py	New solver
HuntCustomTaskRequest.py	New solver
CastleCustomTaskRequest.py	New solver